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Finding the Fourth Proportional to 251,894.68, 377,891.87 and 71,981.73

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Solution

The fourth proportional to 251,894.68, 377,891.87 and 71,981.73 is: 107,986.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,894.68 : 377,891.87 = 71,981.73 : x
  2. Step 2: Convert to fraction form
    251,894.68/377,891.87 = 71,981.73/x
  3. Step 3: Cross multiply
    251,894.68x = 377,891.87 × 71,981.73
  4. Step 4: Simplify right side
    251,894.68x = 27,201,310,195.63
  5. Step 5: Solve for x
    x = 27,201,310,195.63/251,894.68
  6. Step 6: Final answer
    x = 107,986.84

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.